Historical Account of Testaceological Writers. 171 



of Serpula, Dentalia, &c. In the general collection of his works 

 we find a description of the Sable coquillier, or shelly sand found 

 at Zalbach, near Calais (torn. 2. p. 21 — 22.); also a long disserta- 

 tion on tubular substances found in the sea, which is accom- 

 panied by a scheme of arrangement. — The last of this author's 

 memoirs which it falls within our province to mention is on the 

 subject of Lepas anatifera. The history of this animal is very 

 diffusely given in the 4th volume of the collection. M. Guettard 

 remarks upon the accounts given by authors from the earliest 

 times, tracing out the origin of the fabulous narratives that were 

 copied from one to another respecting that singular species. 



In the Transactions of the Electoral Academy of Mentz, the 

 only writer who has treated of shells is 



JOHN FREDERIC HOFFMAN. 



Two of his communications relate to species resembling the Corntt 

 Ammonis, which, in fact, he describes as being found in a native 

 state ; but, though a Nautilus, the shell he alludes to cannot pro- 

 perly be considered as being the same with that fossil. The 

 " Tubuli vermiculares Cornua Ammonis referentes" (described in 

 p. 16 — 20.) are minute shells, similar, many of them, to what had 

 been before noticed by Plancus. The 2d volume of these Trans- 

 actions contains a paper from the same author descriptive of 

 Helix auricularia, the animal of which species, as well as the 

 shell, is minutely noticed. 



COUNT JOSEPH GINANNI, 



of Ravenna, rendered himself well known to the lovers of Testa- 

 ceology by two considerable works which treat of that subject 

 very largely. The Opere Postume contains a description of the ma- 

 ritime, marsh, and terrestrial Testacea of the territory of Ravenna, 



z 2 after 



